US11985728B2ActiveUtilityA1

User equipment specific discontinuous reception cycle

70
Assignee: QUALCOMM INCPriority: Jan 28, 2019Filed: Feb 2, 2022Granted: May 14, 2024
Est. expiryJan 28, 2039(~12.6 yrs left)· nominal 20-yr term from priority
Inventors:Mungal Singh DhandaLuis Fernando Brisson LopesUmesh Phuyal
H04W 76/28H04W 52/0229H04W 68/005H04W 68/02H04W 88/02H04W 88/08Y02D30/70
70
PatentIndex Score
0
Cited by
24
References
28
Claims

Abstract

Improvements are provided to the paging process for an eMTC UE by allowing a base station and the UE to apply a UE-specific DRX cycle for paging, from one set of DRX cycles, when the UE is operating in non-CE mode and apply another UE-specific DRX cycle, from a more restricted set of UE-specific DRX cycles, when the UE is operating in a CE mode. A UE may report and apply certain UE-specific DRX cycles under non-CE mode, and may change a UE-specific DRX cycle to one from a more restricted set when operating in CE mode. Similarly, base stations may receive the reported UE-specific DRX cycle and apply that UE-specific DRX cycle for paging the UE in non-CE mode, while applying a different UE-specific DRX cycle from the more restrictive set for paging the UE in CE mode.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A method of wireless communication at a base station, comprising:
 selecting, based on an indication of a User Equipment (UE) specific Discontinuous Reception (DRX) cycle originating from a UE, the UE specific DRX cycle from among a first set of UE specific DRX cycles if the UE is to be paged in a non-Coverage Enhanced (non-CE) mode; 
 receiving, from a network, a first configuration of a first UE specific DRX cycle from among a second set of UE specific DRX cycles for a first Coverage Enhanced (CE) mode; 
 receiving, from the network, a second configuration of a second UE specific DRX cycle from among the second set of UE specific DRX cycles for a second CE mode; 
 selecting the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the first CE mode or the second CE mode, wherein the second set of UE specific DRX cycles is different than the first set of UE specific DRX cycles; and 
 transmitting a paging message to the UE based on the UE specific DRX cycle. 
 
     
     
       2. The method of  claim 1 , wherein repetitions of the paging message are transmitted between paging occasions, the paging occasions being spaced in time based on the UE specific DRX cycle. 
     
     
       3. The method of  claim 1 , wherein the second set of UE specific DRX cycles comprises one or more UE specific DRX cycles from among the first set of UE specific DRX cycles. 
     
     
       4. The method of  claim 1 , further comprising:
 receiving, from the network, a report of a single UE specific DRX cycle. 
 
     
     
       5. The method of  claim 1 , further comprising:
 receiving, from the network, a report of at least one UE specific DRX cycle from the first set of UE specific DRX cycles that is not comprised in the second set of UE specific DRX cycles. 
 
     
     
       6. The method of  claim 1 , further comprising:
 applying the first UE specific DRX cycle if the UE is operating in the first CE mode; and 
 applying the second UE specific DRX cycle if the UE is operating in the second CE mode. 
 
     
     
       7. The method of  claim 1 , wherein the second set of UE specific DRX cycles comprises at least one UE specific DRX cycle less than or different than the first set of UE specific DRX cycles. 
     
     
       8. The method of  claim 1 , wherein the CE mode comprises the first CE mode, and further comprising selecting the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the CE mode and the UE supports the first CE mode. 
     
     
       9. The method of  claim 8 , further comprising:
 selecting the UE specific DRX cycle from among a third set of UE specific DRX cycles if the UE is to be paged in the CE mode and the UE supports the second CE mode, wherein the third set of UE specific DRX cycles is different than the second set of UE specific DRX cycles. 
 
     
     
       10. The method of  claim 9 , wherein the third set of UE specific DRX cycles comprises a longest UE specific DRX cycle from among the second set of UE specific DRX cycles. 
     
     
       11. The method of  claim 9 , wherein the third set of UE specific DRX cycles comprises at least one UE specific DRX cycle less than or different than the second set of UE specific DRX cycles. 
     
     
       12. An apparatus for wireless communication at a base station, comprising:
 memory; and 
 at least one processor coupled to the memory and configured to:
 select, based on an indication of a User Equipment (UE) specific Discontinuous Reception (DRX) cycle originating from a UE, the UE specific DRX cycle from among a first set of UE specific DRX cycles if the UE is to be paged in a non-Coverage Enhanced (non-CE) mode; 
 receive, from a network, a first configuration of a first UE specific DRX cycle from among a second set of UE specific DRX cycles for a first Coverage Enhanced (CE) mode; 
 receive, from the network, a second configuration of a second UE specific DRX cycle from among the second set of UE specific DRX cycles for a second CE mode; 
 select the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the first CE mode or the second CE mode, wherein the second set of UE specific DRX cycles is different than the first set of UE specific DRX cycles; and 
 transmit a paging message to the UE based on the UE specific DRX cycle. 
 
 
     
     
       13. The apparatus of  claim 12 , wherein the CE mode comprises the first CE mode, and, wherein to select the UE specific DRX cycle from among the second set of UE specific DRX cycles, the at least one processor is configured to select the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the CE mode and the UE supports the first CE mode. 
     
     
       14. The apparatus of  claim 13 , wherein the at least one processor is further configured to:
 select the UE specific DRX cycle from among a third set of UE specific DRX cycles if the UE is to be paged in the CE mode and the UE supports the second CE mode, wherein the third set of UE specific DRX cycles is different than the second set of UE specific DRX cycles. 
 
     
     
       15. The apparatus of  claim 14 , wherein the third set of UE specific DRX cycles comprises a longest UE specific DRX cycle from among the second set of UE specific DRX cycles. 
     
     
       16. The apparatus of  claim 14 , wherein the third set of UE specific DRX cycles comprises at least one UE specific DRX cycle less than or different than the second set of UE specific DRX cycles. 
     
     
       17. The apparatus of  claim 12 , wherein the at least one processor is further configured to:
 transmit repetitions of the paging message between paging occasions, the paging occasions being spaced in time based on the UE specific DRX cycle. 
 
     
     
       18. The apparatus of  claim 12 , wherein the second set of UE specific DRX cycles comprises one or more UE specific DRX cycles from among the first set of UE specific DRX cycles. 
     
     
       19. The apparatus of  claim 12 , wherein the at least one processor is further configured to:
 receive, from the network, a report of a single UE specific DRX cycle. 
 
     
     
       20. The apparatus of  claim 12 , wherein the at least one processor is further configured to:
 receive, from the network, a report of at least one UE specific DRX cycle from the first set of UE specific DRX cycles that is not comprised in the second set of UE specific DRX cycles. 
 
     
     
       21. The apparatus of  claim 12 , wherein the at least one processor is further configured to:
 apply the first UE specific DRX cycle if the UE is operating in the first CE mode; and 
 apply the second UE specific DRX cycle if the UE is operating in the second CE mode. 
 
     
     
       22. The apparatus of  claim 12 , wherein the second set of UE specific DRX cycles comprises at least one UE specific DRX cycle less than or different than the first set of UE specific DRX cycles. 
     
     
       23. An apparatus for wireless communication at a base station, comprising:
 means for selecting, based on an indication of a User Equipment (UE) specific Discontinuous Reception (DRX) cycle originating from a UE, the UE specific DRX cycle from among a first set of UE specific DRX cycles if the UE is to be paged in a non-Coverage Enhanced (non-CE) mode; 
 means for receiving, from a network, a first configuration of a first UE specific DRX cycle from among a second set of UE specific DRX cycles for a first Coverage Enhanced (CE) mode; 
 means for receiving, from the network, a second configuration of a second UE specific DRX cycle from among the second set of UE specific DRX cycles for a second CE mode; 
 means for selecting the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the first CE mode or the second CE mode, wherein the second set of UE specific DRX cycles is different than the first set of UE specific DRX cycles; and 
 means for transmitting a paging message to the UE based on the UE specific DRX cycle. 
 
     
     
       24. The apparatus of  claim 23 , wherein the CE mode comprises the first CE mode, and, wherein the means for selecting the UE specific DRX cycle from among the second set of UE specific DRX cycles is configured to select the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the CE mode and the UE supports the first CE mode. 
     
     
       25. The apparatus of  claim 24 , further comprising:
 means for selecting the UE specific DRX cycle from among a third set of UE specific DRX cycles if the UE is to be paged in the CE mode and the UE supports the second CE mode, wherein the third set of UE specific DRX cycles is different than the second set of UE specific DRX cycles. 
 
     
     
       26. The apparatus of  claim 25 , wherein the third set of UE specific DRX cycles comprises a longest UE specific DRX cycle from among the second set of UE specific DRX cycles. 
     
     
       27. The apparatus of  claim 25 , wherein the third set of UE specific DRX cycles comprises at least one UE specific DRX cycle less than or different than the second set of UE specific DRX cycles. 
     
     
       28. A computer-readable medium storing computer executable code at a base station, the code when executed by a processor causes the processor to:
 select, based on an indication of a User Equipment (UE) specific Discontinuous Reception (DRX) cycle originating from a UE, the UE specific DRX cycle from among a first set of UE specific DRX cycles if the UE is to be paged in a non-Coverage Enhanced (non-CE) mode; 
 receive, from a network, a first configuration of a first UE specific DRX cycle from among a second set of UE specific DRX cycles for a first Coverage Enhanced (CE) mode; 
 receive, from the network, a second configuration of a second UE specific DRX cycle from among the second set of UE specific DRX cycles for a second CE mode; 
 select the UE specific DRX cycle from among the second set of UE specific DRX cycles if the UE is to be paged in the first CE mode or the second CE mode, wherein the second set of UE specific DRX cycles is different than the first set of UE specific DRX cycles; and 
 transmit a paging message to the UE based on the UE specific DRX cycle.

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